Originally Posted by flying_pig
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I asked them several times and they always said there was NO CHANCE to do this, because there are no agreements between the two airlines.

-gio
It is not as easy as it sounds if they do not have agreements between each other.
It sort of like asking Saks to ask Bloomingsdale's to send out a package for a customer that bought something from Saks.
There is also more details, such as: who takes responsiblity if the luggage gets lost/damaged? The first or the second airline?